/**
 * Copyright (c) 2015-2016, Michael Yang 杨福海 (fuhai999@gmail.com).
 *
 * Licensed under the GNU Lesser General Public License (LGPL) ,Version 3.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.gnu.org/licenses/lgpl-3.0.txt
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.jpress.ui.freemarker.function;

import java.math.BigInteger;

import io.jpress.core.render.freemarker.JFunction;
import io.jpress.model.Content;

public class ContentUrl extends JFunction {
	@Override
	public Object onExec() {
		BigInteger id = getToBigInteger(0);
		if (id == null) {
			return null;
		}

		Content content = Content.DAO.findById(id);
		if (content != null) {
			return content.getUrl();
		}
		return null;
	}

}
